101 lines
2.2 KiB
C
101 lines
2.2 KiB
C
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/*
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* Helper functions for tests using sockets
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*
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* Copyright 2015-2018 Red Hat, Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 or
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* (at your option) version 3 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "qemu/osdep.h"
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#include "qemu-common.h"
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#include "qemu/sockets.h"
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#include "socket-helpers.h"
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#ifndef AI_ADDRCONFIG
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# define AI_ADDRCONFIG 0
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#endif
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#ifndef EAI_ADDRFAMILY
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# define EAI_ADDRFAMILY 0
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#endif
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int socket_can_bind(const char *hostname)
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{
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int fd = -1;
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struct addrinfo ai, *res = NULL;
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int rc;
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int ret = -1;
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memset(&ai, 0, sizeof(ai));
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ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG;
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ai.ai_family = AF_UNSPEC;
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ai.ai_socktype = SOCK_STREAM;
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/* lookup */
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rc = getaddrinfo(hostname, NULL, &ai, &res);
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if (rc != 0) {
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if (rc == EAI_ADDRFAMILY ||
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rc == EAI_FAMILY) {
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errno = EADDRNOTAVAIL;
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} else {
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errno = EINVAL;
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}
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goto cleanup;
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}
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fd = qemu_socket(res->ai_family, res->ai_socktype, res->ai_protocol);
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if (fd < 0) {
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goto cleanup;
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}
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if (bind(fd, res->ai_addr, res->ai_addrlen) < 0) {
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goto cleanup;
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}
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ret = 0;
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cleanup:
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if (fd != -1) {
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close(fd);
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}
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if (res) {
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freeaddrinfo(res);
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}
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return ret;
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}
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int socket_check_protocol_support(bool *has_ipv4, bool *has_ipv6)
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{
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*has_ipv4 = *has_ipv6 = false;
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if (socket_can_bind("127.0.0.1") < 0) {
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if (errno != EADDRNOTAVAIL) {
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return -1;
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}
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} else {
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*has_ipv4 = true;
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}
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if (socket_can_bind("::1") < 0) {
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if (errno != EADDRNOTAVAIL) {
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return -1;
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}
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} else {
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*has_ipv6 = true;
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}
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return 0;
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}
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